Couch grass
Couch grass


Couch grass is a grass that is an invasive weed. The leaves and roots are sometimes used to make medicine.

Couch grass is used for constipation, cough, high blood pressure, kidney stones, and other conditions, but there is no good scientific evidence to support these uses.
When taken by mouth: There isn't enough reliable information to know if couch grass is safe or what the side effects might be.

When applied to the skin: There isn't enough reliable information to know if couch grass is safe or what the side effects might be.

Special Precautions & Warnings:

Pregnancy and breast-feeding: There isn't enough reliable information to know if couch grass is safe to use when pregnant or breast-feeding. Stay on the safe side and avoid use.


NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.
Likely effective Effectiveness definitions
Possibly effective Effectiveness definitions
Likely ineffective Effectiveness definitions
Possibly ineffective Effectiveness definitions
Insufficient evidence Effectiveness definitions
  • Constipation.
  • Cough.
  • Bladder swelling (inflammation).
  • Fever.
  • High blood pressure.
  • Kidney stones.
  • Other conditions.
More evidence is needed to rate the effectiveness of couch grass for these uses.

Dosing & administration

The appropriate dose of couch grass depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for couch grass. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.

Interactions with pharmaceuticals

It is not known if this product interacts with any medicines. Before taking this product, talk with your health professional if you take any medications.

Interactions with herbs & supplements

There are no known interactions with herbs and supplements.

Interactions with foods

There are no known interactions with foods.


Extracts of couch grass might contain chemicals that reduce swelling (inflammation).
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This monograph was last reviewed on 20/02/2021 23:33:33 and last updated on 06/11/2015 23:05:49. Monographs are reviewed and/or updated multiple times per month and at least once per year.
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